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Subject[117/156] sparc64: Add very basic XVR-1000 framebuffer driver.
2.6.33-stable review patch.  If anyone has any objections, please let us know.

------------------

From: David S. Miller <davem@davemloft.net>

[ Upstream commits 2d378b9179881b46a0faf11430efb421fe03ddd8 and
f04e879bf296d136bcafd8c5a26e95599b141671 ]

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Frans van Berckel <fberckel@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/video/Kconfig | 12 ++
drivers/video/Makefile | 1
drivers/video/sunxvr1000.c | 228 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 241 insertions(+)

--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -909,6 +909,18 @@ config FB_XVR2500
mostly initialized the card already. It is treated as a
completely dumb framebuffer device.

+config FB_XVR1000
+ bool "Sun XVR-1000 support"
+ depends on (FB = y) && SPARC64
+ select FB_CFB_FILLRECT
+ select FB_CFB_COPYAREA
+ select FB_CFB_IMAGEBLIT
+ help
+ This is the framebuffer device for the Sun XVR-1000 and similar
+ graphics cards. The driver only works on sparc64 systems where
+ the system firmware has mostly initialized the card already. It
+ is treated as a completely dumb framebuffer device.
+
config FB_PVR2
tristate "NEC PowerVR 2 display support"
depends on FB && SH_DREAMCAST
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -79,6 +79,7 @@ obj-$(CONFIG_FB_N411) += n41
obj-$(CONFIG_FB_HGA) += hgafb.o
obj-$(CONFIG_FB_XVR500) += sunxvr500.o
obj-$(CONFIG_FB_XVR2500) += sunxvr2500.o
+obj-$(CONFIG_FB_XVR1000) += sunxvr1000.o
obj-$(CONFIG_FB_IGA) += igafb.o
obj-$(CONFIG_FB_APOLLO) += dnfb.o
obj-$(CONFIG_FB_Q40) += q40fb.o
--- /dev/null
+++ b/drivers/video/sunxvr1000.c
@@ -0,0 +1,228 @@
+/* sunxvr1000.c: Sun XVR-1000 driver for sparc64 systems
+ *
+ * Copyright (C) 2010 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/of_device.h>
+
+struct gfb_info {
+ struct fb_info *info;
+
+ char __iomem *fb_base;
+ unsigned long fb_base_phys;
+
+ struct device_node *of_node;
+
+ unsigned int width;
+ unsigned int height;
+ unsigned int depth;
+ unsigned int fb_size;
+
+ u32 pseudo_palette[16];
+};
+
+static int __devinit gfb_get_props(struct gfb_info *gp)
+{
+ gp->width = of_getintprop_default(gp->of_node, "width", 0);
+ gp->height = of_getintprop_default(gp->of_node, "height", 0);
+ gp->depth = of_getintprop_default(gp->of_node, "depth", 32);
+
+ if (!gp->width || !gp->height) {
+ printk(KERN_ERR "gfb: Critical properties missing for %s\n",
+ gp->of_node->full_name);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int gfb_setcolreg(unsigned regno,
+ unsigned red, unsigned green, unsigned blue,
+ unsigned transp, struct fb_info *info)
+{
+ u32 value;
+
+ if (regno < 16) {
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ value = (blue << 16) | (green << 8) | red;
+ ((u32 *)info->pseudo_palette)[regno] = value;
+ }
+
+ return 0;
+}
+
+static struct fb_ops gfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_setcolreg = gfb_setcolreg,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+};
+
+static int __devinit gfb_set_fbinfo(struct gfb_info *gp)
+{
+ struct fb_info *info = gp->info;
+ struct fb_var_screeninfo *var = &info->var;
+
+ info->flags = FBINFO_DEFAULT;
+ info->fbops = &gfb_ops;
+ info->screen_base = gp->fb_base;
+ info->screen_size = gp->fb_size;
+
+ info->pseudo_palette = gp->pseudo_palette;
+
+ /* Fill fix common fields */
+ strlcpy(info->fix.id, "gfb", sizeof(info->fix.id));
+ info->fix.smem_start = gp->fb_base_phys;
+ info->fix.smem_len = gp->fb_size;
+ info->fix.type = FB_TYPE_PACKED_PIXELS;
+ if (gp->depth == 32 || gp->depth == 24)
+ info->fix.visual = FB_VISUAL_TRUECOLOR;
+ else
+ info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+
+ var->xres = gp->width;
+ var->yres = gp->height;
+ var->xres_virtual = var->xres;
+ var->yres_virtual = var->yres;
+ var->bits_per_pixel = gp->depth;
+
+ var->red.offset = 0;
+ var->red.length = 8;
+ var->green.offset = 8;
+ var->green.length = 8;
+ var->blue.offset = 16;
+ var->blue.length = 8;
+ var->transp.offset = 0;
+ var->transp.length = 0;
+
+ if (fb_alloc_cmap(&info->cmap, 256, 0)) {
+ printk(KERN_ERR "gfb: Cannot allocate color map.\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int __devinit gfb_probe(struct of_device *op,
+ const struct of_device_id *match)
+{
+ struct device_node *dp = op->node;
+ struct fb_info *info;
+ struct gfb_info *gp;
+ int err;
+
+ info = framebuffer_alloc(sizeof(struct gfb_info), &op->dev);
+ if (!info) {
+ printk(KERN_ERR "gfb: Cannot allocate fb_info\n");
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ gp = info->par;
+ gp->info = info;
+ gp->of_node = dp;
+
+ gp->fb_base_phys = op->resource[6].start;
+
+ err = gfb_get_props(gp);
+ if (err)
+ goto err_release_fb;
+
+ /* Framebuffer length is the same regardless of resolution. */
+ info->fix.line_length = 16384;
+ gp->fb_size = info->fix.line_length * gp->height;
+
+ gp->fb_base = of_ioremap(&op->resource[6], 0,
+ gp->fb_size, "gfb fb");
+ if (!gp->fb_base)
+ goto err_release_fb;
+
+ err = gfb_set_fbinfo(gp);
+ if (err)
+ goto err_unmap_fb;
+
+ printk("gfb: Found device at %s\n", dp->full_name);
+
+ err = register_framebuffer(info);
+ if (err < 0) {
+ printk(KERN_ERR "gfb: Could not register framebuffer %s\n",
+ dp->full_name);
+ goto err_unmap_fb;
+ }
+
+ dev_set_drvdata(&op->dev, info);
+
+ return 0;
+
+err_unmap_fb:
+ of_iounmap(&op->resource[6], gp->fb_base, gp->fb_size);
+
+err_release_fb:
+ framebuffer_release(info);
+
+err_out:
+ return err;
+}
+
+static int __devexit gfb_remove(struct of_device *op)
+{
+ struct fb_info *info = dev_get_drvdata(&op->dev);
+ struct gfb_info *gp = info->par;
+
+ unregister_framebuffer(info);
+
+ iounmap(gp->fb_base);
+
+ of_iounmap(&op->resource[6], gp->fb_base, gp->fb_size);
+
+ framebuffer_release(info);
+
+ dev_set_drvdata(&op->dev, NULL);
+
+ return 0;
+}
+
+static const struct of_device_id gfb_match[] = {
+ {
+ .name = "SUNW,gfb",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ffb_match);
+
+static struct of_platform_driver gfb_driver = {
+ .name = "gfb",
+ .match_table = gfb_match,
+ .probe = gfb_probe,
+ .remove = __devexit_p(gfb_remove),
+};
+
+static int __init gfb_init(void)
+{
+ if (fb_get_options("gfb", NULL))
+ return -ENODEV;
+
+ return of_register_driver(&gfb_driver, &of_bus_type);
+}
+
+static void __exit gfb_exit(void)
+{
+ of_unregister_driver(&gfb_driver);
+}
+
+module_init(gfb_init);
+module_exit(gfb_exit);
+
+MODULE_DESCRIPTION("framebuffer driver for Sun XVR-1000 graphics");
+MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
+MODULE_VERSION("1.0");
+MODULE_LICENSE("GPL");



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